WASHINGTON/NEW YORK (Reuters) - A single trade by Waddell & Reed Financial Inc helped spark the cascade of market selling on May 6, said a source familiar with regulators' report on the so-called flash crash.
The report will not name Waddell, which sold a large order of e-mini futures contracts during the plunge, according to the source, who requested anonymity because the report has not been made public.
But the report will describe Waddell's trade as a single trade by an entity, the source said.
(Reporting by Rachelle Younglai and Jonathan Spicer; Editing by Gary Hill)
